I don't know, Maya included “help” for me, is not a very useful help You know, I like study everything by myself. And help useful for me: first do this; second do this; third do this… Example from Maya help: Q: Why PainFX do not work properly with dynamics (or fluid) fog? A: Use the rendering passes. (I don’t remember exactly answer, but something like this) But HOW? And where? (My brother ask my to create nature scene with fog for his desktop) I try converting PaintFX to poly… a lot of grass and trees… I think you understand what’s happened with my computer.